Motor and an optical apparatus having such motor

Details Motor and an optical apparatus having such motor Motor and an optical apparatus having such motor

1991-10-29

1994-11-15

Gellner, Michael L.

Electrical generator or motor structure

Dynamoelectric

Rotary

310332, G03B 118, H01L 4104

Patent

active

053652967

ABSTRACT:
A motor for driving a moving member with respect to a member which serves as a reference of the movement includes at least two first piezoelectric actuators for operating an operating portion thereof such that it is brought into contact with and is moved away from said member, and at least one second piezoelectric actuator operating such that it changes a distance between the plurality of first piezoelectric actuators. At least one of the plurality of first piezoelectric actuators employs a bimorph type piezoelectric element.

REFERENCES:
patent: 4291958 (1981-09-01), Frank et al.
patent: 4303324 (1981-12-01), Marcus
patent: 4601539 (1986-07-01), Watanabe
patent: 4920369 (1990-04-01), Kaneda et al.
patent: 5101278 (1992-03-01), Itsumi et al.

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